EP 2225040 B1 20160817 - METHOD FOR RECOVERING SILICON FROM SAWING WASTE
Title (en)
METHOD FOR RECOVERING SILICON FROM SAWING WASTE
Title (de)
VERFAHREN ZUM RÜCKGEWINNEN VON SILIZIUM AUS SÄGEABFALL
Title (fr)
MÉTHODE DE RÉCUPÉRATION DU SILICIUM DANS DES DÉCHETS DE SCIAGE
Publication
Application
Priority
- IB 2008003330 W 20081204
- CH 19652007 A 20071219
Abstract (en)
[origin: WO2009081245A1] A method for separating and recovering silicon debris from sawing waste is characterized in that it comprises the following steps: - treating the sawing waste so as to deoxidize the silicon debris in a manner that reduces their surface energy, - applying to the sawing waste thus treated a flotation method using a flotation liquid and a nonoxidizing flotation gas, and - recovering the silicon debris at the surface of the flotation liquid.
IPC 8 full level
B03D 1/02 (2006.01); B28D 5/00 (2006.01); C01B 33/02 (2006.01); C01B 33/037 (2006.01); C02F 1/24 (2006.01); C02F 1/70 (2006.01); C02F 9/00 (2006.01); C02F 103/34 (2006.01)
CPC (source: EP KR US)
B03B 1/04 (2013.01 - KR); B03D 1/02 (2013.01 - EP KR US); B28D 5/00 (2013.01 - KR); B28D 5/007 (2013.01 - EP US); C01B 33/02 (2013.01 - EP US); C01B 33/037 (2013.01 - EP US); C02F 1/24 (2013.01 - EP KR US); C02F 1/70 (2013.01 - EP US); C02F 9/00 (2013.01 - EP US); C02F 2103/346 (2013.01 - EP US); Y02P 70/10 (2015.11 - EP)
Citation (examination)
US 2007209945 A1 20070913 - KARELIN ALEXSANDER I [RU], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2009081245 A1 20090702; CH 703236 B1 20111215; EP 2225040 A1 20100908; EP 2225040 B1 20160817; KR 101557275 B1 20151005; KR 20100114032 A 20101022; TW 200932677 A 20090801; TW I460129 B 20141111; US 2010278707 A1 20101104; US 8381914 B2 20130226
DOCDB simple family (application)
IB 2008003330 W 20081204; CH 19652007 A 20071219; EP 08865873 A 20081204; KR 20107015957 A 20081204; TW 97142362 A 20081103; US 80877708 A 20081204